Bag-making machine



J. .VANDENBERG Dec. 4

mm MAKING MACHINE 2 Sheets-Sheet 1 Filed Sept. 18 1922 nrro /vfksi Dem- 4, 1 923.

ZSh eetS -Sheet 2 Filed S ept.f l8 1922 J. \(A NDENBE RG BAG MAKING MACHINE Patented Dec. 4, 1923.

JACOB VANDENBERG, OF WYOMING, OHIO, ASSIGNOR TO THE SECURITY BAG'COM- PANY, OF CINCINNATI, OHIO, A CORIORATION OF OHIO.

BAG-MAKING MACHINE.

Application filed September 18, 1922. Serial No. 588,878.

T all whom it may concern:

Be it known that 1', JACOB VANDENBERG, a citizen of the United States, and a resident of Wyoming, in the county of Hamilton and 6 State of Ohio, have invented certain new and useful Improvements in Bag-Making Machines, of which the following is a full, clear, and exact description, reference being bad to the drawings accompanying this 10 specification.

My invention relates to devices in connection with bag bottoming machines, by means of which carefully placed holes for mounting a string handle, are punched'in the rim of the bag.

In the manufacture of string handle bags, such as are ordinarily known as shopping bags, there has been required uniformly in the past, so far as I am advised, a separate handling of each ba to punch the necessary.

holes for inserting the string.

This is expensive, and adds considerably to the cost of the bag, and it'is the object of my invention to provide a punch in connection withbag bottoming machines which will operate satisfactorily in placin the desired holes in the proper place for insertion of the string handle during the process of making the bag. I

It" is also my object to make the punch devices adjustable and connect them with that member of the usual type of machine whereby the spacing fromthe bottom of the bagto the point for insertion of the holes can be accuratel allowed for.

These objects accomplish'by that certain construction and arrangement of parts to be hereinafter more specifically pointed out and claimed.

In the drawings, Figure 1 is a side elevation of the usual bag bottoming machine, or bottomer. g

Figure 2 is a detail side elevation of the members to which my punching devices are. attached, also showing the punches in section. Figure 3 is a front elevation of the parts shown in Figure 2.

Figure 4 is a central vertical section taken longitudinally of the usual bottomer, showing my invention attached thereto.

igure 5 is a front elevation of the complete element to which my punching devices are attached, showing the punches also.

Figures 6 and 7 are plansof a bag partly bottomed and completed, respectively.

The bottoming machines for making bags such as shopping bags, as ordinarily constructed, are adapted to receive blanks, folded and pasted into tubular form, and to fold, glue, and arrange a bottom on the blanks, as well as to form a crease about the open end of the bag to serve as a guide in folding in the top edge, as a re-inforcement thereto.

Although the nature of the bottoming machine in detail forms no essential part of my invention I have shown a machine, as

now used by me for bottoming bags. In this machine the initial creases for the forming of a bag bottom are formed by passing the bag between large rolls 1, 1, and triggers 2, 2, catch the creased parts and draw them into position for the operation of the folding devi es at 3. In these folding devices the end folds are completed.

The creases and'folds accomplishedafter the blank has passed the members 3 are shown in Figure '6, in which the heavylines indicate fold lines and the lighter linesindicate single thickness edges of paper. The blank is shown as formed into tubular form along the glued lap 4, the bottom ends are folded along the lines 5, 5, and one half of the bottom turned up along the fold 6. The

paper is cut at'7, 7, to permit the side pieces 8, 8, to extend in a single thickness flat with the blank.

There then remains to form lines or creases 9, 9, along which lines the side folds are to be made, and to apply gluevto the sides so that they-will be held down When folded. I

In the frame of the machine. are .two shafts 10, 10, one above and one below the table 11, along which the bag moves. At

each end of theseshafts are pulleys or belt. wheels,12, around which are set conveyor.

belts 13, 13.

Mounted by means of adjustable fixed arms 14 on the shafts, said arms bein located between the'wheels, are sector p ates 15, which are provided with glue and which will engage the blank as it passes between the shafts under impulse of the conveyor belt.

Thus'the blank is projected along thetable from the mechanisms 3, into the grasp of the conveyor belts, which when the shafts 10 are driven act to grasp the'blank between them and feed it along in a firm grasp,there being a set of belts at each end of the shafts so as to engage the two edges of the bag.

The sector plates engage the bottom folds of the bag and apply glue thereto. A roller suitably supplied with glue from a tank wipes the sector plates, thereby coating them with the glue.

, As the blank proceeds along the conveyor it comes next to the side crease mechanism.

This comprises two more shafts 16, 16, suitably supported and driven, over which shafts are set the pulleys 17, to receive the conveyor belts, there being four pulleys, two

while an extension from the collar 19 car ries a clamp bolt 23, which may be adjustably set in theslot of the segment.

By this mechanism the two crease knives 18 and 19 on the arms 20 and 21 respectively, are adjusted with relation to each other and the assembly then clamped tightly to the shafts.

Cross bars 24, 24:, extending across between the pulleys on the lower shaft 16, act as'female members for the crease knives.

The mechanism so far described is intended as calling for any form of bottomer hav-v ing the general plan of construction noted, and not as covering anything which is of my invention in its details. The reason for utilizing the particular mechanism described is that it provides for a final crease of the bottom of the bag at the sides thereof on a mechanism which includes two interspaced shafts, with the crease knives mounted intermediate their ends.

Since the lines of fold at the bottom of the bag are adjustable for different sized bags, the position of the knives on the upper shaft 16 must be changed, so that the feed of the machine will bring the bag to proper position when the crease knives come into operation.

The operation of folding over the two sides of the bag along the crease lines formed by the two knives is completed by rolls 25 and a tucker blade 26 that swings in an are on the long arm 27. The rolls 25 also form the crease line 28 to serve as a guide in folding in the edges of the bag for re-inforcement]. The completed bag is shown in F igure I Mounted on the upper shaft 16 are clamp ing collars 30, 30, which are thus adjustable aboutv the shaft. These collars include the inmost The distance from. the side lines of fold and the end of the bag is regulated by .ad-

justment of the crease knives on the upper shaft 16, and the bag is held tightly between the conveyor belts when in contact with these knives. It follows that the adjustment of the punch and die members will govern absolutely the position in which the holes will be punched, and the adjustment can be made by running a blank through the machine-of the length which is to be employed and adjusting the crease knives first, and then adjusting-the punch and die holders to engage the bag the proper distance away from the creases.

The space between the carrying shafts for the crease knives is unobstructed so that no member is present to interfere with the positioning or adjustment of the punches or to block the punching operation. I am not aware of any other point in any bottomer machine where thi will be true, and where the adjustment of the punches will be such that the punched holes are bound tobe in the right place unless the bag itself is ruined through improper registry of the machine.

The advantage of having the holes in the right place lies in the fact that operations involving the insertion of the handles can be made uniform and in part mechanical thereby greatly speeding up the operation of handle insertion and insuring the position 'of the handle in exactly the correct place for strength and convenience.

Having thus described my invention, what I claim as new and desire to secure b Letters Patent, is e 1. In a bag bottoming machine, the combination with a shaft and a conveying mechanism driven in the same direction, a bottom creasing knife mounted on said shaft, and

adapted to form the side crease of the final fold of the bag bottom at one end of the bag, and a punch carrier adjustably mounted on said shaft, 'and having punches therein to form holes in the bag at the desired position therein at the other end of the bag. 1

2. In abag bottoming machine, the combination with a pair of shafts, pulleys on the ends of the shafts, conveyor belts passing over said pulleys and adapted to engage the edges of a bag and feed it in a tight grasp between the said shafts, mechanism mounted on and operated by said shafts for form- 1130 j ing the final side fold creases of a bag bottom at one end of the bag, and adjustable mechanism mounted on and operated by said shafts for punching holes in the bag at the other end thereof and away from the crease formed by the creasing mechanism.

3. Ina ba bottoming machine, the combination Witfi a pair of shafts, pulleys on the ends of the shafts, conveyor belts passing over said pulleys and adapted to engage the edges of a bag andfeed it in a tight grasp between the said shafts, mechanism mounted on and operated by said shafts for forming the final side fold creases of a bag bottom at one end of the bag, and adjustable mechanism mounted on and operated by said shafts for punching holes in the bag at the other end thereof and away from the crease formed by the creasing mechanism, said creasing mechanism comprising a pair of collars adjustably fixed to the shaft, and admounted on said collars and adapted to en gage the bag as it is moved along by said conveyor belts;

4. In a bag bottoming machine, the combination with a shaft and a conveying'mechanism driven in. the same-direction, a bottom creasing knife mounted on said shaft, and adapted to form the side crease of'the final fold of the bag bottom at one end of the bag, and a punch carrier adjustably mounted on said shaft, and having punches therein to form holes in the bag at the other end'thereo-f away from the said bottom fold crease, said punch carrier comprising a cross bar, arms for supporting the same, and clamp collars on the arms adapted to engage the said shaft, as and for the purpose de-l scribed.

JACOB VANDENBERG.

justably held together, and crease knives I 

